On Wed, 21 Jun 2017, Jim Klimov wrote:
On June 21, 2017 5:26:47 PM GMT+02:00, Tim Dawson <tadaw...@tpcsvc.com> wrote:
My thought of #2 require none of that . . . I have a server with two
supplies, and two UPS units. One supply is on each UPS, and clients are
distributed otherwise to balance. The main thing is to ensure that it
is documented accurately how to config so that the server only shuts
down when the *second* unit hits low battery . . . I found the info on
this topic almost nonexistent at present . . .
That example is rather simple and is covered in original NUT docs and/or
example config-file comments. Set up two driver sections in ups.conf,
and an upsmon with two MONITOR entries powering one PSU each, and a
single required power supply. That's about it.
I added a short chapter 3 to cover what I understand is the configuration.
http://rogerprice.org/NUT/ConfigExamples.A5.pdf#section.3
The source material was the User Manual 6.5. Typical setups for big
servers with UPS redundancy
http://networkupstools.org/docs/user-manual.chunked/ar01s06.html#BigServers
and http://www.susaaland.dk/sharedoc/nut-2.0.3/docs/big-servers.txt
but I chose one UPS per server power inlet to avoid any discussion of
cabling topology.
Roger
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